Supergirl -- "American Alien" -- Image Number: SPG401b_0024b.jpg -- Pictured (L-R): Rhona Mitra as Mercy Graves and Robert Baker as Otis Graves -- Photo: Bettina Strauss/The CW -- ÃÂ© 2018 The CW Network, LLC. All Rights Reserved. | Episode 4.01 - American Alien | Promotional Episode Photos | Season 4 | Supergirl | Gallery

SpoilerTV Image Archive | Gallery | Supergirl | Season 4 | Promotional Episode Photos | Episode 4.01 - American Alien | Supergirl -- "American Alien" -- Image Number: SPG401b_0024b.jpg -- Pictured (L-R): Rhona Mitra as Mercy Graves and Robert Baker as Otis Graves -- Photo: Bettina Strauss/The CW -- ÃÂ© 2018 The CW Network, LLC. All Rights Reserved.

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